P0AA6 / INF612

DTC P0AA6-526 Hybrid Battery Voltage System Isolation Fault
DTC P0AA6-611 Hybrid Battery Voltage System Isolation Fault
DTC P0AA6-612 Hybrid Battery Voltage System Isolation Fault
DTC P0AA6-613 Hybrid Battery Voltage System Isolation Fault
DTC P0AA6-614 Hybrid Battery Voltage System Isolation Fault

DESCRIPTION

DTC Detection Condition:

The hybrid vehicle control ECU monitors the battery smart unit and detects insulation malfunctions in the high-voltage system.

HINT:
- *1: INF code 526 is stored together with P0AA6.
- *2: On a trip after INF code 526 is stored, these INF codes are stored if the malfunctioning area is determined.
- If P0AA6 is output, the vehicle cannot start until the DTC is cleared using the intelligent tester.
- If P0AA6 is output while driving, the vehicle can drive for the remainder of that trip.

Wiring Diagram:

Step 1-2:

Step 2(Continued)-3:

Step 4-5:

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Step 7-8:

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INSPECTION PROCEDURE

CAUTION:
- When troubleshooting P0AA6, be sure to wrap the tools with electrical tape. (It will be very dangerous if high voltage is shorted to ground through the tools.)
- Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting, check the voltage at the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

HINT: Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.